You can take her with you.
For that, I would put some hot water into a water bottle or two. Then put your snake in a snake bag or small container. Then put that bottle(s) and snake into an insulated cooler.
I've had hot water bottles keep a steady 80-85 degrees for 4-5 hours just fine in an insulated box.
But even if your car was around 70 degrees, she will be fine without heat.